Thin-place-detector mechanism for looms.



PATBNTED MAR. 17, 1908.

APPLIGATION FILED MAY 29. 1902.

no MODEL.

No. 723,049. PATENTED MAR. 17, 1903.

E; E. SHELTERS & H. T. HUNNEWELL.

THIN PLACE DETECTOR MECHANISM FOR LOOMS. APPLICATION FILED MAY 29. 1902.

in) MODEL.

UNITED "STATES ERNEST E.

ATET

'SHELTERS AND HENRY T. HUNNEWELL, OF LOWELL, MA S SA- GHUSETTS.

THlN-PLACE -DETE'CTOR MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 723,049, dated March 17, 1903.

Application filed May 29, 1902- Serial No. 109,433 (N model.)

county of Middlesex, State of Massachusetts,

have invented a certain new and useful Improvement in Thin-.Place-Detector Mechanisms for Looms,of which. the following is a specification, reference being hadytherein to the accompanying drawings.

The invention consists in an improved mechanism foruse on looms'for the purpose of detecting thin places in. the webs being woven, resulting from absence of weft. :5 Our invention in the form thereof which 1 has been employed by us in practice is illustrated in the accompanying drawings, in

which- Figure 1 shows in plan portion of a loom having the invention applied thereto, only such of the usual parts of the loom being shown as are required for the purpose of making clear the nature, relations, and mode of operation of the parts that are involved in the invention. Fig.2 is a partly-sectional side elevation of certain of the features of Fig. 1. Fig. 3 showsin front elevation the detector and its connected parts. Fig. 4 shows the detector in side elevation. the detector in vertical section.

In the drawings portion of one side frame of a loom is intended to be indicated at 1, the breast-beam at 2, and the lay-beam at 3.

4 is the lay-cap. 5, Fig. 1, is the temple-stand pertaining to one side of the loom, and 5 is the corresponding temple. f

6, Fig. 1, is the usual plate or bracket projecting outwardlyin line with the breast-beam Fig. 5 shows 4 at the driving end of the loom and provided with the. slot 6, in which works the shipperhandle 7.

8, Fig. 1, is the usual knocking-0E lever, and 8 is the pivot by which the said knocking-off lever is connected with the said plate or bracket.

i 9 is the Weft-fork, and 9 the slide on which the weft-fork is mounted.

The foregoing parts are usual features of looms and are presented chiefly for convenience in making clear the relations, &c., of

which has the length thereof disposed paral- .191 with the lay, the said rod being fitted to bearings in lugs 12 12 12 of a stand 12, attached to the breast-beam. The feeler 10 extends rearward ly from the said. rod toward the lay. Au arm 11 also extends rearwardly from the rod 11 and is loosely engaged with a knocking-off piece 13. The latter is located in position to coact with the inner arm of the knocking-0E lever 8, its forward end being slotted at 13 and the slot receiving the said arm, as indicated in Figs. 1 and 2. The rear portion of the knocking-off piece 13 is controlled in position by the arm 11 of the rod 11, the said arm having a loop or longitudinal opening 11 in which is received a pin or other projection 13*, extending from the knookiugoff piece 13. Knocking-ofi piece 13 coacts with a suitable going part of constituted by the lay, the lay-beam 3 having attached thereto a suitable striker, as 14, intended to encounter the knocking-off piece 13 when the latter is caused to enter the path of said striker and actuate said knocking-off piece, so as to effectuate the unshipping. Any 0 suitable provision may be made for causing the feeler lO to bear against the surface of the web A. In the illustrated embodiment of the invention the gravity of the rearwardly-extending feeler and arm 11 and of the knocking-off piece 13, suspended from arm 11, is sufficient for the purpose. l

The action of the invention willbe obvious. So long as the end of the feeler 10 rests against properly-woven portions of webAthe Ion feeler is maintained in an abnormal position by such portions of the said web, and the knocking-off piece 13 will be held out of the path of movementof the striker 14. When, however, a thin place in the web presents itself to the feeler 10, the feeler will move into its normal position and the end of the same will entersuch thin place. Thereby the rod 11 will be permitted to turn, and the knocking-011' piece 13 will be permitted to enter the path of tnovement ot' striker 14. The resulting engagement of knocking-off piece 13 by the strikerl l will cause knockingotf lever 8 to be actuated to dislodge the shipper-handle and bring about the unshipping of the loom, so as to arrest the working of the latter. 1

In order that the feeler may not inconvenience the weaver when the latter is engaged in remedying the fault in the web, the feeler is mounted with capacity for being shifted out of the way when required. Thus in the present instance it is carried by an arm 10, which last is hung looselyupon the rod 11. A second arm 10 is mounted upon rod 11 at the side of arm 10 and is made fast therewith by means of a clamping-screw 10, Fig. 3. Arm 10 is pressed against artn 10 by tneans of a spring 10. One of the said arms is formed with'a projection and the other with a depression to receive the said. projection, as shown in sectional detail in Fig. 5. Thereby the arm 10 is yieldingly locked to arm 10 so as to cause arm 10 and attached feeler 10 to turn in unison with rod 11 ordinarily. When, however, it-is desired to swing the feeler 10 out of the way, the feeler and arm 1O may be turned upward independently around the rod 11.

In order to enable the feeler to be adjusted in a direction widthwise of the loom-as, for instance, to accommodate different widths of webthe rod 11 is made capable of sliding lengthwise through its bearings in the lugs 12 12 12 of the stand 12. For the purpose of holding the feeler in place after being adj usted two of the said lugs are located close together, and the space between them is occupied by the hub portion of the arm 11 the latter being clamped to the rod by means of a screw 11. After loosening this screw the rod 11 may he slid lengthwise to the extent required and held in the adjusted position by tightening up the screw again. In order to enable the feeler to be adjusted in a direction toward or from the lay, it is formed with a loop or slot 10, through which is passed the stem of the screw 10 by means of which the feeler is clamped to arm 10.

At 13 is shown a guide for steadying the knocking-off piece 13 in its movements, the said guide being constituted by the verticallyupturned inner end of a plate that is secured in place upon the base of the stand 12 by means of a clamping-screw 13 ,having its stem passed through a longitudinal slot 13 in said plate, such slot providing for transverse adjustment of the guide when required.

Whatwe claim is 1. In thin-placedetector mechanism, in combination, a going part, the feeler to bear against the web, the rod on which the feeler is mounted, hearings in which the said rod is arranged to turn, the knocking'off piece operatively connected with the said rod and movable in unison therewithinto and out of position for engagement by the said going part, and a shipper device operated by movement of said knocking-0E device when the latter is engaged by said going part.

2. In thinplace-detector mechanism, in combination, a going part, the feeler to bear against the web, the rod on which the feeler is mounted, hearings in which the said rod is arranged to turn, an arm on said rod, the knocking-off piece 13 controlled in position by the said arm and movable in unison therewith into and out of position for engagement by the said going part, and shipper devices operated by movement of said knocking-0E piece when the latter is engaged by said going part.

3. In thin-place -detector mechanism, in combination, the feeler to bear against the web, the rod on which the feeler is mounted, hearings in which said rod is arranged to turn, an arm on said rod, the knocking-oft piece 13 controlled in position by the said arm and movable in unison therewith into and out of position for engagement by the said going part, the knocking-off lever, the shipper'handie, and the lay provided with a striker to move said knocking-off piece and efiectuate the dislodgment of theshipper-handle.

4. In thin-place-detector mechanism, in combination, the feeler to bear against the web, the rod on which the feeler is mounted, hearings in which the said rod is arranged to turn, an arm, on said rod, the knocking-off piece 13 controlled in position by the said arm, shipper devices under operative control of said knocking-off piece, a going part adapted to engage with said knocking-oft piece, and means to adjust the position of the feeler transversely of the loom.

5. In thin-place-detector mechanism, in combination, the feeler to bear against the web, the rod on which the feeler is mounted, hearings in which the said rod is arranged to turn, an arm, on said rod, the knocking-0E piece 13 controlled in position by the said arm, shipper devices under operative control of said knocking-oft piece, a going part adapted to engage with said knocking-oft piece, and means to adjust the rod in the direction of its length.

6. In thin-place-detector mechanism, in combination, the feeler to bear against the web, the rod on which the feeler is mounted, hearings in which the said rod is arranged to turn, an arm, on said rod, engaging with said bearings to prevent lateral displacement of CD k) means to press said arms into engagement with each other, the construction enabling r 5 the feeler to be swung into inoperative position when required, and unshipping mechanism nnder control of the said rod.

.In testimony whereof we affix our signatures in presence of two witnesses.

' ERNEST E. SHELTERS.

HENRY T. HUN NEWELL.

Witnesses:

PAUL R. BURTT, WILLIAM H. H. BROWN. 

